Abstract
INTRODUCTION: Temporomandibular joint (TMJ) is subjected to many disorders commonly termed temporomandibular disorders (TMDs) which include TMJ hypermobility, ankylosis and internal derangement. In the past, many non-invasive conservative treatment modalities were tried out for their treatment which include joint unloading, the use of anti-inflammatory agents and physiotherapy. In recent times, injections of corticosteroids and platelet-rich plasma (PRP) into the TMJ have been proposed as alternative therapeutic methods. The main objective of the prospective study was to compare the efficacy of intra-articular injection of PRP and hydrocortisone with local anaesthetic agents in reducing the symptoms in patients with TMDs. MATERIALS AND METHODS: This prospective study included 30 patients with TMDs, out of which 15 patients (Group I) received PRP injections and 15 patients (Group II) received hydrocortisone with local anaesthetics for arthrocentesis in their affected joints. The patients were assessed for pain, maximum interincisal mouth opening, TMJ sound and disc displacement. RESULTS: The pain was markedly reduced in patients who received PRP injections (Group I) as compared to those who received hydrocortisone injection (Group II). An increase in mouth opening was similar in both the groups, and TMJ sounds were reduced in patients who received PRP. Magnetic resonance imaging also showed that PRP-treated patients showed better articular disc repair than patients treated with hydrocortisone. DISCUSSION: PRP increases chondrocyte proliferation and production of matrix molecules and helps maintain the integrity of the chondral surface, thereby facilitating joint movement, whereas corticosteroids are more potent anti-inflammatory agents and they act by inhibiting prostaglandin synthesis which is the mediator of inflammation. Thus, the use of PRP has been proven to show better results in reducing the symptoms of TMDs and also helped in articular disc repair.